Research on High Strength Hypoeutectic Al-Si Alloy
In this study, hypoeutectic Al-Si casting alloy was investigated to obtain high strength, according to alloying of Cu Mg, refining of Al-5Ti-B master alloy, modifing of Re and T6 heat treatment.The experimental results show that the mechanical properties of the tested alloy reach peak when addition of A1-5Ti-1B alloy is 1.0% after heat treatment, especially the yield strength, correspondingly, microstructure distribution gets to the best state.When Al-5Ti-1B exceeds 1.0%, the mechanical properties descend gradually.The metallic compounds of Mg2Si phase, CuAl 2 phase and W phase precipitated along the grain boundary and strengthened dispersively can improve mechanical properties of the tested alloys.The yield strength of samples added 0.1% Re (La 50%,Ce 40%) increases slightly, simultaneously, the tensile strength and elongation decreases.After 0.1% Re, the mechanical properties get down.
hypoeutectic Al-Si alloy Al-5Ti-1B T6 heat treatment mechanical properties Re
Jia Tingting Chen Guoshi Zhang Shuo Wu Ming Geng Haoran
School of Materials Science and Engineering, University of Jinan, Jinan 250022 Yantai Lutong Precision Aluminum Company Limited, Yantai 264006
国际会议
The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)
哈尔滨
英文
10-18
2013-08-23（万方平台首次上网日期，不代表论文的发表时间）